152 Appendix II: Recipes 4 Filling mass (low viscosity for brush application) (for painting) 2 pw* parts per weight Plextol D498 (15% in distilled water) 1 pw Methocel A4M (3% in distilled water) added to the desired consistency: mixture of champagne chalk and glass platelets (15γ) (Kremer 59852) 2,5:1 The glass particles allow optimising the consistency and shrinkage 5 Filling mass (high viscosity) (for painting) 2 pw* parts per weight Plextol D498 (15% in distilled water) 1 pw Methocel A4M (3% in distilled water) to be added to match the desired viscosity (compact, but smooth and not friable) champagne chalk 6 Cellulose fiber filler for small canvas holes 3 ml 10% hide glue 3 ml 4% Methocel A4C (methylcellulose ether) in water 1,2 gr Arbocel BC200 (cellulose fibers) 7 Xylene gel for removal of varnish and overpaint Xylene gel 80 wt% Water based buffer system 20 wt % 100 ml xylene 0.5 % citric acid in distilled water TEA to reach pH 6 1 2 g Carbopol 20 ml Ethomeen® C 12 Ethomeen® C 12 1 ~ 1.5 ml H2O 8 Filling mass (for painting) 0,5-1 pv* parts per volume Primacryl acrylic emulsion color (Schmincke) 1 pv Methocel A4C (5% in distillated water) 2,5 pv filler mixture: chalk (champagne): glass platelets (15μ) (Kremer 59852), 2,5 : 1 (ratio of the two fillers: parts per weight) Ratio between binding medium: filling medium - mixture 1:1, /1:1,25 parts per volume The filling material was coloured to a light-greyish local color with PRIMAcryl emulsion paint to allow for a precise monitoring of the surface structure and to facilitate the following retouching
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